Networks Connecting to Hybrid Cloud DCs: Gap Analysis
draft-ietf-rtgwg-net2cloud-gap-analysis-05

Document Type Active Internet-Draft (rtgwg WG)
Last updated 2020-03-18
Replaces draft-dm-net2cloud-gap-analysis
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Network Working Group                                    L. Dunbar
Internet Draft                                           Futurewei
Intended status: Informational                            A. Malis
Expires: September 18, 2020                              Independent

                                                       C. Jacquenet
                                                             Orange
                                                     March 18, 2020

           Networks Connecting to Hybrid Cloud DCs: Gap Analysis
                draft-ietf-rtgwg-net2cloud-gap-analysis-05

Abstract

   This document analyzes the technical gaps that may affect the
   dynamic connection to workloads and applications hosted in hybrid
   Cloud Data Centers from enterprise premises.

Status of this Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

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   This Internet-Draft will expire on September 18, 2020.

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1]

Internet-Draft          Net2Cloud Gap Analysis               March 2020

Copyright Notice

   Copyright (c) 2020 IETF Trust and the persons identified as the
   document authors. All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
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Table of Contents

   1. Introduction...................................................3
   2. Conventions used in this document..............................3
   3. Gap Analysis for Accessing Cloud Resources.....................4
   4. Gap Analysis of Overlay Edge Node's WAN Port Management........4
   5. Aggregating VPN paths and Internet paths.......................6
      5.1. Control Plane for Overlay over Heterogeneous Networks.....7
      5.2. Using BGP UPDATE Messages.................................8
         5.2.1. Lacking SD-WAN Segments Identifier...................8
         5.2.2. Missing attributes in Tunnel-Encap...................8
      5.3. SECURE-L3VPN/EVPN.........................................9
      5.4. Preventing attacks from Internet-facing ports............11
   6. C-PEs not directly connected to VPN PEs.......................11
      6.1. Floating PEs to connect to Remote CPEs...................14
      6.2. NAT Traversal............................................14
      6.3. Complexity of using BGP between PEs and remote CPEs via
      Internet......................................................14
      6.4. Designated Forwarder to the remote edges.................15
      6.5. Traffic Path Management..................................16
   7. Manageability Considerations..................................16
   8. Security Considerations.......................................16
   9. IANA Considerations...........................................17
   10. References...................................................17
      10.1. Normative References....................................17
      10.2. Informative References..................................17
   11. Acknowledgments..............................................18

Dunbar, et al.        Expires September 18, 2020               [Page 2]
Internet-Draft          Net2Cloud Gap Analysis               March 2020

1. Introduction

   [Net2Cloud-Problem] describes the problems enterprises face today
   when interconnecting their branch offices with dynamic workloads
   hosted in third party data centers (a.k.a. Cloud DCs). In
   particular, this document analyzes the routing protocols to identify
   whether there are any gaps that may impede such interconnection
   which may for example justify additional specification effort to
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